My first CB 750

[chuck hahn]

Last night i bought a running and riding 1976 CB 750A. I dont know one thing about the mechanics of the bike.  I have been on bikes for the last 35 years , but mostly Suzuki GS series bikes and some various Hondas and Kawasakis, This is my first fully automatic bike though..  I did have a 98 Shadow 1100 VT for 12 years also. I am looking forward to learning about this bike. I will take some pics and post later. Right now though the most important thing is to find a downloadable service manual for the bike.  Thjanks, Chuck.

[Re-run]

Chuck, first off, welcome to the forum! As for a manual, I thought we had one, but for the time being, there is a large 69-78 manual which will have some special info for the A. It is a large download but will cover much of what you need. I will see if I can find one for the A if we do not have it.

We do not have it but that manual will cover some of it BUT I did find an A manual. I just have to get it on my pc at home so I can merge the pdf files for upload.

[TOOLS1]

Welcome to the forum. what questions do you have? I myself have 2 1/2 76 CB 750 As
TOOLS

[chuck hahn]

Well the first thing i have on my mind is that i notice that at an idle theres a rather pronounced clunking from down by the what i suspect is the torque converter area.  I did some googling at work and found out what that big round area on the right is. I rode the bike to work about 19 miles one way and it ran great. Once its up and cruising the clunking goes away.  So I was thinking maybe carbs sync needs done or that the idle is set too low. I looked all over and didnt find an idle adjustment screw.  Any advise on these  situations??

[chuck hahn]

OHHH...and how can i add pics from my image shack acct of the bike??

[TOOLS1]

To add pictures, just use the "insert image" tab at the top of reply box. the idle adjust screw is on the No#4 carb. Just look over the top of it, and you will see it towards the front. These bikes are noisy at idle, but it sounds just like carbs out of sync. I would go on and check the carbs myself though.
TOOLS

[chuck hahn]

[chuck hahn]

Herres some pics i took after i washed it and done a bit or chrome polishing  today. The bike wasnt rusty..just that yellowish tarnish. It basically wiped right off..  I took like 27 pics, so i will post them all. They are kinda randomly selected. I took pics of all the original stickers , the inside of the tank is spotless, seat pan is emaculant, just an over all super clean bike for its age.

[URL=http://img805.imageshack.us/i/cb750a027.jpg/][IMG]http://img805.imageshack.us/img805/7906/cb750a027.th.jpg[/IMG][/URL]
[URL=http://img221.imageshack.us/i/cb750a026y.jpg/][IMG]http://img221.imageshack.us/img221/3203/cb750a026y.th.jpg[/IMG][/URL]
[URL=http://img710.imageshack.us/i/cb750a025.jpg/][IMG]http://img710.imageshack.us/img710/5928/cb750a025.th.jpg[/IMG][/URL]
[URL=http://img508.imageshack.us/i/cb750a024.jpg/][IMG]http://img508.imageshack.us/img508/8886/cb750a024.th.jpg[/IMG][/URL]
[URL=http://img221.imageshack.us/i/cb750a023.jpg/][IMG]http://img221.imageshack.us/img221/4536/cb750a023.th.jpg[/IMG][/URL]
[URL=http://img155.imageshack.us/i/cb750a022.jpg/][IMG]http://img155.imageshack.us/img155/7932/cb750a022.th.jpg[/IMG][/URL]
[URL=http://img24.imageshack.us/i/cb750a021.jpg/][IMG]http://img24.imageshack.us/img24/1585/cb750a021.th.jpg[/IMG][/URL]
[URL=http://img29.imageshack.us/i/cb750a020.jpg/][IMG]http://img29.imageshack.us/img29/7879/cb750a020.th.jpg[/IMG][/URL]
[URL=http://img84.imageshack.us/i/cb750a019.jpg/][IMG]http://img84.imageshack.us/img84/1428/cb750a019.th.jpg[/IMG][/URL]
[URL=http://img199.imageshack.us/i/cb750a018.jpg/][IMG]http://img199.imageshack.us/img199/2636/cb750a018.th.jpg[/IMG][/URL]

[chuck hahn]

Heres some more...

[URL=http://img508.imageshack.us/i/cb750a017.jpg/][IMG]http://img508.imageshack.us/img508/953/cb750a017.th.jpg[/IMG][/URL]
[URL=http://img718.imageshack.us/i/cb750a016.jpg/][IMG]http://img718.imageshack.us/img718/7199/cb750a016.th.jpg[/IMG][/URL]
[URL=http://img862.imageshack.us/i/cb750a015.jpg/][IMG]http://img862.imageshack.us/img862/8486/cb750a015.th.jpg[/IMG][/URL]
[URL=http://img7.imageshack.us/i/cb750a014.jpg/][IMG]http://img7.imageshack.us/img7/3345/cb750a014.th.jpg[/IMG][/URL]
[URL=http://img405.imageshack.us/i/cb750a013.jpg/][IMG]http://img405.imageshack.us/img405/7616/cb750a013.th.jpg[/IMG][/URL]
[URL=http://img7.imageshack.us/i/cb750a012.jpg/][IMG]http://img7.imageshack.us/img7/9207/cb750a012.th.jpg[/IMG][/URL]
[URL=http://img691.imageshack.us/i/cb750a011.jpg/][IMG]http://img691.imageshack.us/img691/347/cb750a011.th.jpg[/IMG][/URL]
[URL=http://img819.imageshack.us/i/cb750a010.jpg/][IMG]http://img819.imageshack.us/img819/573/cb750a010.th.jpg[/IMG][/URL]
[URL=http://img41.imageshack.us/i/cb750a009.jpg/][IMG]http://img41.imageshack.us/img41/8836/cb750a009.th.jpg[/IMG][/URL]
[URL=http://img715.imageshack.us/i/cb750a008.jpg/][IMG]http://img715.imageshack.us/img715/45/cb750a008.th.jpg[/IMG][/URL]

[chuck hahn]

And the last batch...
[URL=http://img405.imageshack.us/i/cb750a007.jpg/][IMG]http://img405.imageshack.us/img405/4023/cb750a007.th.jpg[/IMG][/URL]
[URL=http://img835.imageshack.us/i/cb750a001.jpg/][IMG]http://img835.imageshack.us/img835/781/cb750a001.th.jpg[/IMG][/URL]
[URL=http://img806.imageshack.us/i/cb750a003.jpg/][IMG]http://img806.imageshack.us/img806/961/cb750a003.th.jpg[/IMG][/URL]
[URL=http://img191.imageshack.us/i/cb750a002.jpg/][IMG]http://img191.imageshack.us/img191/892/cb750a002.th.jpg[/IMG][/URL]
[URL=http://img708.imageshack.us/i/cb750a004.jpg/][IMG]http://img708.imageshack.us/img708/3489/cb750a004.th.jpg[/IMG][/URL]
[URL=http://img683.imageshack.us/i/cb750a005.jpg/][IMG]http://img683.imageshack.us/img683/9121/cb750a005.th.jpg[/IMG][/URL]
[URL=http://img84.imageshack.us/i/cb750a006.jpg/][IMG]http://img84.imageshack.us/img84/8891/cb750a006.th.jpg[/IMG][/URL]

[chuck hahn]

I got yet another question..LOL.  What are the carbs on these bikes?? Look like mikunis to me but whats the nomenclature??

[TOOLS1]

Typically they are referred to as JUNK  However the brand is Keihin.
TOOLS

[chuck hahn]

So i measure the engine side of the throats to determine the MM size?

[TOOLS1]

If you really want to know what size they are I'm sure someone here will know, or find out. Are planning on rebuilding, or upgrading them?
I just finished looking at your pictures. Can you detail mine next? that is one clean bike. Also I have never seen that seat, grab bar, and rear turn signal mounts before. Do you know if they were an upgrade, or option?
TOOLS

[chuck hahn]

Guy I bought it from told me it was his father in laws and he bought it new.  This is my first CB and i can only assume the bike is all original and stock. As for detailing..All i did was wash it down with some purple power and rinsed with a hose.  The chrome had just a bit or tarnish here and there. It wasnt even rust yet. I took some chrome polish and a rag and rubbed it in a little bit and wiped it off.. Wasnt that bad of a problem to polish at all. I did the entire process in about 3 hrs.